Effect of nitrogen fertilization on chemical composition and rumen fermentation of different parts of plants of three corn hybrids

Masoero, Francesco; Gallo, Antonio; Zanfi, C.; Giuberti, Gianluca; Spanghero, M.

doi:10.1016/j.anifeedsci.2011.02.001

Cited by 38 publications

(40 citation statements)

References 25 publications

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“…In other words, more fertilized silages had increased amounts of soluble fiber, which is the fraction of greatest potential for digestibility. The same was reported by MASOERO et al (2011), who analyzed different levels of reduced nitrogen fertilizer in corn crops (without nitrogen fertilization, 100 and 150kg N ha -1 ) and observed increased fiber digestibility in corn silage, especially in leaf and inferior stalk areas.…”

Section: ------------------------------------------------------------supporting

confidence: 79%

Chemical fractionation of carbohydrate and protein composition of corn silages fertilized with increasing doses of nitrogen

et al. 2017

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The use of nitrogen fertilizers in corn crops for silage can improve both production and, theoretically, nutritional quality, especially carbohydrate and protein fractions, thereby optimizing animal production. Thus, the aim of this study was to evaluate the effect of increasing levels of nitrogen fertilization in carbohydrate and protein fractionation on the resulting corn silage (Zea mays L.). Nitrogen fertilization was carried out in the urea form (45-00-00) in V5 stage, at the following doses: T1: 0kg N ha-1; T2: 45kg N ha-1; T3: 90kg N ha-1; and T4: 135kg N ha-1. Crops were harvested at R4 stage and submitted to ensiling in experimental PVC silos. The chemical composition of the resulting silage was evaluated after silo opening. There was no statistical difference (P<0.05) in the average contents of gross protein (GP), as well as its C fraction, showing that increasing nitrogen doses in coverage linearly increased GP and linearly decreased its C fraction. For total carbohydrates, there was a linear decreasing behavior due to such consumption with the highest levels of nitrogen applied. Increased nitrogen fertilization dose in corn also linearly enhanced pH in the resulting silage. Therefore, nitrogen increases in coverage can alter carbohydrates and GP fractionation of corn silage, with increases in soluble fiber, GP, and pH, and reduction in the protein indigestible fraction.

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Section: ------------------------------------------------------------supporting

confidence: 79%

Chemical fractionation of carbohydrate and protein composition of corn silages fertilized with increasing doses of nitrogen

et al. 2017

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“…Starch digestibility decreased markedly during the 4 week long monitoring period in all the hybrids, but Klips tended to reach the minimum earlier (at T5) and remained almost constant at T6. Similar decreases in STD_7h were reported for whole plant corn, fermented or unfermented, harvested from half milk line to black layer or within a whole plant content range similar to that of the present experiment (Andrae et al, 2001;Johnson et al, 2003;Jensen et al, 2005;Masoero et al, 2011). Others authors, on the contrary, found no significant or very limited effects of maturation on STD_7h.…”

Section: Seven Hour In Vitro Digestibility Trialsupporting

confidence: 90%

“…Similar decline in CP content is frequently reported in the literature (Zeoula et al, 2003;Xu et al, 2010) and largely attributable to the diluting effect of starch accumulation. On the contrary, Masoero et al (2011) found an increase of CP at black layer, a stage of maturity.…”

Section: Resultsmentioning

confidence: 83%

Effects of Hybrid and Maturity Stage on in Vitro Rumen Digestibility of Immature Corn Grain

Ahmed

Grecchi

Ficuciello

et al. 2014

Italian Journal of Animal Science

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This study aimed to evaluate the influences of hybrids (HYB) and maturity stage (SAMP) on in vitro rumen digestibility of immature corn grain. Four HYB (Gigantic, Y43, Klips and 9575) from the FAO group 700 were grown under identical agronomic conditions. First sampling (T1) was done after 95 days from seedling and then 4, 8, 13, 18 and 27 days later (T2 to T6). In vitro starch digestibility (STD_7h) and gas production (72 h) were measured. Whole plant and grain dry matter (WP_DM and GR_DM, respectively) and zein content were significantly affected (P<0.01) by HYB and SAMP. Starch content was significantly affected by HYB, SAMP and their interaction. It increased from T1 to T4 (from 67.47 to 72.82% of GR_DM) and then tended to plateau. Concurrently, STD_7h significantly decreased with advancing SAMP and was also affected by HYB. With advancing maturity, total volatile fatty acids (VFA) significantly decreased, with an increase of acetate and a decrease of propionate molar proportion (P<0.01). Gas production rate (GP_c) was significantly affected by HYB, SAMP and HYB×SAMP. Whole plant grain DM correlated (P<0.01) positively with grain starch content (r=0.60 and 0.64) but negatively with STD_7h (r=-0.39 and r=-0.63) and VFA concentration (r=-0.59 and -0.75). Zein percentage in crude protein negatively affected (P<0.01) total DM (r=-0.65,), STD_7h (r=-0.73) and GP_c (r=-0.68). Results suggest that genotypes and maturity stages influence DM and rumen starch digestibility of immature corn grain and in this respect zein can play a significant role.

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“…The effects of including 200 g/kg DM high cut maize silage in the diet fed to heavy pigs on stomach traits and gastric mucosal disease (2 pigs/pen and 7 pens/diet; pens as experimental units). basal part of the stalk there is a high concentration of lignin, which depress fibre digestibility, and a high nitrate accumulation (Masoero et al 2011). As reported in Table 1 the main chemical differences between the two diets were the aNDFom and the CP contents which were, respectively, increased (by about 5 percentage points) and reduced (by about 1 percentage point) with the HCCS inclusion.…”

Section: Dietsmentioning

confidence: 92%

“…lower growth rate and fat deposition). Nevertheless, whole plant maize silage contains a different fibre than WECS, because stalks have a less degradable fibre in comparison with that of the cob and the husks (Masoero et al 2011) and, perhaps more important, has a larger dimension of particles. The inclusion of a coarse and a fibrous ingredient, such as the maize silage, induced a relevant modification in the development of the stomach in terms of total weight and total surface, which is due to the capacity to retain the more fibrous and coarse particles of the diet for a longer period.…”

Section: Fattening and Slaughter Trial (Exp 2)mentioning

confidence: 99%

Digestibility, metabolic utilisation and effects on growth and slaughter traits of diets containing whole plant maize silage in heavy pigs

Galassi

Malagutti

Rapetti

et al. 2016

Italian Journal of Animal Science

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Two experiments were conducted to investigate the inclusion of high cut whole plant corn silage (HCCS) in diets for finishing heavy pigs on digestibility, metabolic utilisation, growth performance and slaughter traits. A control diet (CTR, containing maize meal, barley meal, extracted soybean meal and wheat bran, 550, 250, 90 and 80 g/kg DM, respectively) was compared with diet (CS) containing 200 g/kg DM of HCCS. The HCCS replaced wheat bran and part of maize meal in the CTR diet. In the first experiment, eight barrows were used in a two periods cross over design with periods of 21 d, included 7 d of total collection and three cycles of 24 h each in a respiratory chamber. In the second experiment, 28 barrows were divided into pairs on the basis of BW, kept in 14 pens and fed with the experimental diets until slaughter. Lower DM, OM, CP and energy total tract apparent digestibility was measured for the CS diet. Overall P retention as percentage of P intake was higher for CS diet, while N retention was similar for the two diets. Pigs fed CS tended to have a lower retained energy and the estimated NE of maize silage was 8.47 MJ/kg DM. Pigs fed the CS diets had a lower daily gain, a lower BW at slaughter and a reduction in the weight of back fat. The inclusion of HCCS increased the size of the stomach, the aNDFom concentration of stomach content and reduced the incidence of follicular gastritis. ARTICLE HISTORY

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Effect of nitrogen fertilization on chemical composition and rumen fermentation of different parts of plants of three corn hybrids

Cited by 38 publications

References 25 publications

Chemical fractionation of carbohydrate and protein composition of corn silages fertilized with increasing doses of nitrogen

Chemical fractionation of carbohydrate and protein composition of corn silages fertilized with increasing doses of nitrogen

Effects of Hybrid and Maturity Stage on in Vitro Rumen Digestibility of Immature Corn Grain

Digestibility, metabolic utilisation and effects on growth and slaughter traits of diets containing whole plant maize silage in heavy pigs

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